激发条件的选择是否适当，对地震勘探原始资料质量影响很大。一般认为，在陆地勘探工作中，

电除尘器的主要优点是( )。

A．除尘效率高

B．压力损失少

C．能耗少

D．抗高温和腐蚀

Sam was employed by Insurance Company as a financial advisor and was given business cards which clearly stated so. However, in reality, the company had employed him to sell life insurance policies and nothing else. Peter approached Sam and told him that he had just sold his house for R800,000 and wanted some financial advice on where he should invest that money for a profitable return. He told Sam he would be willing to invest the entire sum for a period of three years for capital growth.Sam advised Peter that he should lend this amount to Joe, who is a building contractor of some repute, and that he would most likely double this amount in three years time. He also promised Peter he would make sure Joe provided adequate security for the loan. Peter followed Sam’s advice.Joe’s business collapsed soon thereafter. It became insolvent and the most that Peter can get out of the security that Joe provided is R100,000.Required:Advise Peter if he has a case against Insurance Company in the law of agency. (10 marks)

下列物质中属于多糖的是()

A、糖元

B、蔗糖

C、麦芽糖

D、葡萄糖

国家不当行为是指国家违背国际法义务的行为，是国家责任的构成要件之一、下列选项中不属于国际法上的国家不当行为的是：

A．甲国某省政府官员在履行职责时超越其权限所做的侵害乙国国家主权的行为

B．某国政府在紧急情况下所做出的违反该国条约义务的行为

C．甲国与乙国签订了边界条约，在该条约生效后，甲国边境巡逻士兵在巡逻时发现界碑倒塌，遂擅自将界碑向乙国领土内移动近400米

D．乙国总统作为国家元首身份在访问甲国期间，以私人身份与该国叛乱组织接触，并承诺支持该叛乱组织的活动

你小区推行网络服务，微博、论坛等方式效果不大，你作为小区这项工作负责人，你怎么改进